Summary: Headlines for December 23, 2016; "Absolutely Frightening": Greenpeace Responds to Trump's Call for a New Nuclear Arms Race; Using 1953 Law, Obama Indefinitely Blocks Offshore Oil Drilling in Arctic and Atlantic; Obama Administration Dismantles Idled Muslim Registry Ahead of Trump Inauguration; NYC Council Speaker: Solidarity Efforts Needed to Fight Trump as He Targets Muslims & Immigrants; Puerto Ricans Push Obama to Free Oscar López Rivera, Independence Activist Jailed for 35 Years
